Re: Toooo many context switches (maybe SLES8?)
Dave Cramer <pg@fastcrypt.com>
From: Dave Cramer <pg@fastcrypt.com>
To: Josh Berkus <josh@agliodbs.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>, Joe Conway <mail@joeconway.com>, Dirk Lutzebäck <lutzeb@aeccom.com>, pgsql-performance@postgresql.org
Date: 2004-04-18T18:49:53Z
Lists: pgsql-performance
Isn't this a linux kernel issue ? My understanding is that the scheduler doesn't know that 2 of the CPU's are actually the same underlying hardware and sometimes two contexts end up fighting for the same underlying chip? --dc-- On Thu, 2004-04-15 at 16:37, Josh Berkus wrote: > Folks, > > > I am currently chasing what seems to be the same issue: massive context > > swapping on a dual Xeon system. I tried back-patching the above-mentioned > > patch ... it helps a little but by no means solves the problem ... > > BTW, I'm currently pursuing the possibility that this has something to do with > the ServerWorks chipset on those motherboards. If anyone knows a high-end > hardware+linux kernel geek I can corner, I'd appreciate it. > > Maybe I should contact OSDL ... -- Dave Cramer 519 939 0336 ICQ # 14675561